Leak lock



Dec. 19, 1933. L. w. BROWNE LEAK LOCK Filed April 18. 1932 I "IP i W Q51 Mam whe W Patented Dec. 19, 1 933 irE-os TArEs PATENT orrlca Application April 18, 1932. Serial No. 605,986

sclaims. (c1. new-99)- One object of my invention is to provide a leak circumstances, ordinary nuts 'andbolts may he lock for leaks in pipes, couplings, bell ends and/ or used. Each locking element A comprises a shank the like, which is ofsimple and durable construc- 22 and a head 24. The shank of thelockingeletion and which may be readily and quickly mament A may be made flat or may be round'in cross I nipulated'to prevent leakage in a pipe or cousection. I prefer the latter structure. The head 0 pling which has sprung a leak. 24is formed with its upper edge curved on the A further object is to-provide a leak lock com- 'arc ofv a circle, so that the locking element may prising a pair of semi-cylindrical members adapt- 'rock against the surface of the flange 20. The edto encircle 'apipe or the like, with a gasket beshank 22 as illustrated in Figure 1 is of such width tween-the pipe 'or coupling and one of the memor diameter as to permit this rocking and is 'pref- 65 'bers and covering a leak in'the pipe or coupling erably slightly curved as shown. Then the end r and I provide novelmeans for connecting the'two of the shank 22 is provided with an overhanging members together. i f portion 26 to cooperate with the cam locking ele- More particularly, it is my object to provide ment B. r V p 7 v i I- cla'mpingmeans for the semi-cylindrical mem- Each clampingelement B is 'preferably made 70 bars comprising aipair of elements coactable with of metal and is U-shape in cross section as clearly each other and arranged so that they can be shown in Figures 2 and i of the drawing. Each quickly manipulated for clamping the 'semiecjyelement B has camsurfaces 28 at one end thereof li'ndricalmembers together; v terminating in flat surfaces 30. At one end of the 1. "An additional object is to provide a clamping member B, the closed end is cut away to leave a means consisting of a-special locking element and cross bar 32 provided for coaction with-the abuta-U -shapedcam element having a portion coactment or notch 26 of the clamping element A. 'A able with part of the headed element. handle 34 is provided as an extension of the With these and other objects in view my invenparts 28, 30 and 32 and the edge 36 thereof, when tion consists in the construction, arrangement the edge is against the flange 18 as shown in and combination of the various parts of my de- Figure 1, is spaced from the flange to permit ready vice, whereby the objects contemplated are atunclamping of the clamp.

tained, as hereinafter more fully set forth, point- My l ak k is adapted for preventing leakage ed out in my claims, and illustrated in the acin pipes or the like 13. In Figure 2 for instance,

companying drawing, in which: an opening is illustrated at 15 through which the Figure 1 is a side elevation of a pipe with my fluid in the pipe would leak if it were not for the leak lock applied thereto. leak look. A' gasket 1'7 of rubber or the like is Figure2 is a vertical sectional view on the line interposed betw the P p 13 and the semi-cylirh 22 of Figure 1. drical member 12 and the clamping elements A i 3.5 Figure 3 is a perspective view of the semiand B are in position for drawing the member 10 cylindrical members of the leak lock. int engagement w the p p 13 and the member Figure 4 is a perspective view of a handle e1e- 12 into engage e With the gasket 7 a d conment of the clamping means i and sequently the gasket into tight engagement with Figure 5 is a plan view of a modified form of t e Oute u a e of the P p 13 Coupling e 1 clamping means. like. i

On the accompanying drawing, I have used The projections 14'and the notches 16a prothe reference numerals 10 and 12 to indicate vide for quick cooperation of two edges of the semi-cylindrical pipe engaging members. The members 10 and 12 with each other. The clamp- 1 member 10 has one or more T-shaped projeeing elem n A and B provide for q y ntions 14 along one edge thereof, it being undering the other two edges of the members 10 and' stood that the members 10 and 12 can be made 12 together for holding the leak lock in proper in any length desirable and the longer ones have leak prevention position on the pipe. The surmore of the projections 14. The projections 14 faces'28 being cam-shaped (which is illustrated are adapted to hookingly engage notches 16a of by the right-hand clamp in Figure 1) provide for V a flange 16 formed on the member 12. tightly pulling the members 10 and 12 toward each The members 10 and 12 at their opposite edges other by merely swinging the handle 34 in the have flanges 18 and20 provided with slots 19 and direction of the arrow b. When the handle 21, respectively. The slots 19 and 21 are adapted reaches the position shown at the left of Figure to receive locking elements Awithwhichcamlock 1, the flat spot 30 retains it in this position and 5.5 ing elements B coact. When desired under some yet the edge 36 being spaced from the flange 18 allows for easy and quick return of the handle 34 to non-locking position when it is desired to remove the clamp.

The entire lock can be readily stamped from sheet metal as well as being made of cast metal, while the particular designs of the clamping elements A and B particularly lend themselves to a stamping type of product. The element B being U-shaped and thus formed double prevents any side strain on the parts when'in locked position.

In Figure 5 I have shown clamping elements A" and B which differ from the elements A and B in that the shank 22a and the head 24a are round, while the sides of the member B are more widely spaced in order to accommodate the increased width of the element A. Other portions of the clamp shown in Figure 5 corresponding to those of the previous figures are given the same reference numerals with the addition of the distinguishing'character a.

The clamping means shown in Figure 5 is particularly adapted for substitution in the openings of flanges or other devices where ordinarily bolts are used.

Some changes may be made in the construction and arrangement of the parts of mydevice without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims,'any modified forms of structure'or useof mechanical equivalents, which may be reasonably included within their scope. For example, instead of the member 20, a saddlemay be substituted when it is desired to remove contents from a pipe. By the use of the word openings in my claims 1 intend to include holes or notches,

I claim as my invention: 7 I 1. In a leak look, a channel shaped member of semi-cylindrical form having outwardly projecting flanges at its edges, provided respectively with notches and with slots, a second cooperating semicylindrical channel-shaped member, having at one edge T-shaped tongues to cooperate with said slots and having at the other end an outwardly projecting flange, provided with slots, locking elements having curved shanks adapted to extend through slots in the respective members having heads at one end with curved faces to engage and rock on one of the flanges and hook-like members at the other end, and channel-shaped clamping devices having at one end cam faces terminating in flat faces, and spaced cross bars and slots ad- 'acent the cross bars to receive the hook-like members.

2. In a leak look, a pair of channel-shaped semicylindrical members, having edges with cooperating engaging means and edges with outwardly extending flanges provided with slots, locking elements having curved shanks adapted to extend through slots in the respective members having heads at one end with curved faces to engage and 'rockon one of the flanges and hook-like members at the other end, and channel-shaped clamping devices having at one end cam faces terminating in flat faces, adapted to seat against said one flange, when the pair of members are clamped together, for serving to lock the parts in place, against accidental movement of the locking elements, and spaced cross bars and slots adjacent the cross bars to receive the hook-like members.

3. In a leak look, a pair of channel-shaped semicylindrical members, having edges with cooperating engaging means and edges with outwardly extending flanges provided with slots, locking elements adapted to extend through said slots, having heads at one end and hook members at the other, and channel-shaped clamping devices having at one end cam faces terminating in flat faces, adapted to engage one of the flanges, to lock the members together and prevent accidental movement of the locking elements and spaced cross bars and slots adjacent the cross bars to receive the hook-like members.

LYLE W. 'BROWNE. 

